from django.db import models

class BaseModel(models.Model):
    """为模型类补充字段"""
    create_time = models.DateTimeField(auto_now_add=True,verbose_name='创建时间')
    update_time = models.DateTimeField(auto_now=True,verbose_name='更新时间')

    class Meta:
        abstract = True # 抽象类，只能被继承，不能被迁移
